iOS 获取图片主题色

使用iOS 中的 Palette 库获取颜色，调用方法

getPaletteImageColorWithMode

- (void)getMostColorFormImage:(UIImage *)image{
    WEAKSELF
    [image getPaletteImageColorWithMode:ALL_MODE_PALETTE withCallBack:^(PaletteColorModel *recommendColor, NSDictionary *allModeColorDic,NSError *error) {
        NSLog(@"获取主题色-----%@",allModeColorDic);
        __block CGFloat maxPercentage=0;
        __block PaletteColorModel * mostColorModel = recommendColor;
        [allModeColorDic.allValues enumerateObjectsUsingBlock:^(id  _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
            if([obj isKindOfClass:[PaletteColorModel class]]){
                PaletteColorModel *model = obj;
                if(model.percentage*100>maxPercentage){
                    maxPercentage = model.percentage*100;
                    mostColorModel = model;
                }
            }
        }];
        
        NSString * mosrColorStr = [mostColorModel.imageColorString stringByReplacingOccurrencesOfString:@"#" withString:@"0x"];
        UIColor *color = [UIColor colorWithHexString:mosrColorStr];
    }];
}